introduction to biology

I have a exam thats due tonight the exam covers 4 chapters (chapter 10 cell cycle and mitosis) and (chapter 11 meiosis) (chapter 12 genetics) (chapter 13 Heredity) the exam is 50 questions and timed 55 minutes you have to use responds lock down browser which will not let you open any other window. there is only one attempt once your in you cant leave the exam unless your done with it if cancelled the exam it will automatically be submitted.